a    2017
b    2019
c    2018
d    Estimate.
e    Break in the time series.
f    2016
g    Data refers to a 5-year period preceding the reference year.
h    Refers to foreign citizens.
i    Including refugees.
j    Data as at the end of December.
k    2008
l    2012
m    Data are as at 1 January of reporting year.
n    Population aged 10 years and over.
o    Excluding business enterprise.
p    Partial data.